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GPAC MP4Box CVE-2026-90578

| EUVDEUVD-2026-77063 LOW
Use After Free (CWE-416)
2026-09-13 VulDB GHSA-4j36-28vc-v5w9
1.9
CVSS 4.0 · Vendor: VulDB

Severity by source

Vendor (VulDB) PRIMARY
1.9 MEDIUM
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
5.3 MEDIUM

Local-only attack requiring low privileges to supply a crafted file; UAF causes limited heap corruption with low C/I/A impact and unchanged scope.

3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
4.0 AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

Primary rating from Vendor (VulDB).

CVSS VectorVendor: VulDB

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

5
Severity Changed
Sep 13, 2026 - 19:22 NVD
MEDIUM LOW
CVSS changed
Sep 13, 2026 - 19:22 NVD
4.8 (MEDIUM) 1.9 (LOW)
Source Code Evidence Fetched
Sep 13, 2026 - 19:18 vuln.today
Analysis Generated
Sep 13, 2026 - 19:18 vuln.today
CVE Published
Sep 13, 2026 - 18:45 cve.org
MEDIUM 4.8

DescriptionCVE.org

A flaw has been found in GPAC up to f1219cde. Affected by this issue is the function gf_list_count of the file utils/list.c of the component MP4Box. Executing a manipulation can lead to use after free. The attack is restricted to local execution. The exploit has been published and may be used. Upgrading to version abi-16.23 can resolve this issue. This patch is called 49dee5cad329cfed310c1682703df7daa47df31a. It is suggested to upgrade the affected component.

AnalysisAI

Use-after-free in GPAC's MP4Box multimedia tool (all versions through commit f1219cde) allows a local low-privileged attacker to corrupt heap memory via the gf_list_count function in utils/list.c, resulting in application crashes and potentially limited code execution within the process. The fix released in abi-16.23 (commit 49dee5cad329) addresses multiple interrelated UAF and null-dereference conditions across the scenegraph manager, BIFS memory decoder, and AV1 reframer subsystems. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Impact
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Vulnerability AssessmentAI

Exploitation Exploitation requires local shell access to the target system with at minimum low-privilege credentials (consistent with PR:L in the CVSS 4.0 vector). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 score of 4.8 with vector AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P accurately characterizes limited real-world risk: exploitation is strictly local, requires only standard user credentials, and the demonstrated impact is bounded to low confidentiality, integrity, and availability effects within the GPAC process. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Upgrade GPAC to version abi-16.23 or later, which incorporates patch commit 49dee5cad329cfed310c1682703df7daa47df31a. … Detailed patch versions, workarounds, and compensating controls in full report.

Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-90578 vulnerability details – vuln.today

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